The pie charts display how electricity production by various energy sources has changed in Scotland in 20 years.

The provided pie chart

demonstrated

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demonstrates

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the proportion of generated electricity by energy

source

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sources

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for

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apply

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20 years ago and

last

year in Scotland. Looking from an

overall

perspective, coal

the

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is the

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most significant type of resource

that is

used to generate energy by far in both years . Coal

also

slightly decreased its dominance. The three biggest energy sources for 20 years ago were coal, gas,

nuclear

Correct word choice

and nuclear

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with 41.4%, 22.3% and 19.6%, respectively.

However

, coal slightly decreased from almost half to 32.7%. Despite a minor decrease of 0.6% to 21.7%

in

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apply

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last

year,

nuclear replaced

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nuclear-replaced

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gas as the second-highest source

in

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apply

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last

year. The remaining four resources were

hydro

natural flow,

hydro pumped

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hydro-pumped

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storage, oil and other renewables.

Hydro

natural flow and

hydro

pumped storage merely dropped from 8.7

percent

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per cent

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to 7.9 and from

three point

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three-point

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one

percent

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per cent

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to 2.2%, whilst

other

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the other

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two grew up from 2.1 to 4.0

percent

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per cent

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and 2.8% to 5.1

percent

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per cent

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.